A note is made of your passport expiry date, so immigration is aware of it. I have a passport sticker, the date is written on it of my passport expiry date ending before my DTV. I guess those with a PDF DTV a note is made on it too, When you get your new passport, carry your old one with you.
Sponsorship rules vary depending on the embassy you apply from. It can be easier as many do, to 'borrow' the money from your father to deposit in your account and apply yourself.
Contact the social media sites of the embassy as well to inform them of your situation. That has worked with similar cases as yours with other embassies. Hopefully you hear soon.
Anonymous participantYeah wait until approved where you apply. If you leave early your DTV can be rescinded upon arrival in Bangkok or a later date. Contact the SM sites of Frankfurt embassy also to make contact
A few others have posted on delays in Frankfurt with approvals taking around a month. You can apply anywhere that does not have specific residency requirements which is the majority worldwide. SE Asia is popular due to its proximity to Thailand and 'friendly' process. Some, like myself chose Taiwan as it was same day approval. Most likely you will hear soon from Frankfurt..